Pasteurizer



Wi. GOLDBERGER.

PASTEURIZER.'

APPLICATION FILED MAR. I8. 192-2.

Patente Dec. l2, 1922..

2 SHEETS-SHEET l. gl' 36S 2 SHEETS-SHEET Z.

Patented Dec. I2, 31922.

IVI. GOLDBERGER.

PASTEURIZER. APPLICATION FILED MAR. I8. 1922- UIT- IIIIII.

Patented Dec. l2, 1922.

MORRIS GOLDBERGEB, F CHICAGO, ILLINOIS, ASSIGNOR TO CRESCO-CREAIVIERY SUPPLY CO., OF CHICAGO, ILLINOIS, A CORPORATION 0F ILLINOIS.

PASTEURIZER.

Application filed March 18,

To all fwhomz't may concern.'

Be it known that I, MORRIS GOLDBERGER, a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Pasteurizers; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the characters of reference marked thereon, which form a part of this specification.

This invention relates to improvements in apparatus for treating milk for pasteurizing the same under the known batch process of pasteurizing, or for otherwise conditioning milk and' other liquids, and the invention consists in the combination and arrangement of the elements shown in the drawings and described in the specification,

and is pointed out in the appended claimsx An apparatus to which the improvements constituting my invention is applied consists,

in general terms, of a jacketed tank comprising an inner shell to receive the material to be treated, an outer supporting shell, with a space between them to receive a heating medium, such as water or steam, an agitator within the inner shell, and driving means for turning the agitator to maintain thematerial in motion while being treated.

Among the objects of the invention is to provide an improved construction of such apparatus for solidly connecting the inner and outer shells to constitute a rugged unitary structure, and by means including spacing elements to space the shells to produce the jacket space therebetween.

Another objectv of the invention is to provide an improved driving mechanism support for the agitator so arranged as to cooperate with the mechanism for spacing the shells and for supporting the inner shell from the outer shell, both for the purpose of firmly anchoring the driving mechanism support to the tank and for the purpose of bracing the structure.

Another object of the invention is to exteriorly1 insulate the outer shell Aby means to avoid contact of the hand with a heated surfaceand also to produce an attractive exterior dressin for the apparatus.

A further object of the invention is to provide an improved driving mechanism for use in connection with such tanks which is 1922. Serial No. 544,965.

simple in construction, sanitary in use, and which can be readily disconnected when the material to be treated is to be poured into the tank.

Other objects of the invention are to otherwise improve and simplify apparatus for this general purpose.

As shown in the drawings:

Figure l is a vertical axial section, on line 1-1 of Figure 2, of an apparatus embodyinfr my invention.

igure 2 is a plan view thereof.

Figure 3 is a partial plan and partial sectional view, taken on the line 3-3 of Figure 1.

Figures 4 and 5 are enlarged sectional details, taken on the respective lines 4-4 and 5 5 of Figure.

The apparatus includes an open top tank designated as a whole by 10, which comprises an outer shell 11 and an inner shell 12, which are spaced between their bottoms and sides to produce a space 14 to receive a heating or other fluid to control the temperature of the material to be treated in the shell 12. The outer shell 11 may be made of boiler plate construction, suitably fabricated and of substantial strength. The inner shell. 12 is made of lighter gauge sheet metal, preferably copper or like metal of high heat conductivity.

Thesaid tank is supported on legs 15, 15, which, as shown, consists of studs or short pipe sections that are threaded into bosses 16 fixed to the outer shell bottom and are threaded at' their lower ends into spherical bearers 17. The threaded connection of said bearers with the studs or stems of the legs enables the tank to be adapted to uneven surfaces while maintaining a proper liquid levelI in the tank. l

The said inner shell is supported by' and centralized within the outer shell by means made as follows:

The upper, open end of the inner shell is formed with an outwardly extending, radial, preferably continuous, lflange 18. It is adapted to lie over the horizontal flange 19 of a ring 20 of angle cross section, the vertical fiange 21 of which lies exteriorly against and is riveted to the shell 12 below its terminal flange 19. The said shell flange and ring 20 constitute a reinforcement for the open margin of the said inner shell.

Fastened to the upper margin of the outer shell 11 are a plurality of relatively short, angularly spaced, angle brackets 22, the vertical members of which are riveted or otherwise fastened to the shell 11 on the inner side thereof, and the horizontal members 23 of which extend radially inwardly in underlapping` relation to the horizontal fiange 19 of the ring 20. @ther relatively short, arcuate, angularly spaced, solid blocks 22 are arranged between the depending flange of the ring 20 and the innerI side of the outer shell 11, and are riveted thereto, as shown in Figures 3 and 4. Said blocks constitute spacers along with the interspersed brackets 22 to space the inner from the outer shell at the open, upper` ends thereof. They also assist to support the inner shell, being arranged with their top surfaces at the level of the upper members of the brackets 20. Said spacing blocks 22 serve additionally to constitute a connection between the tank and a driving mechanism supporting beam 36, as will hereinafter more fully appear. The upper or end edge of the jacketed tank thus formed is finished and forms a neat, water-proof joint by a thin channel cross section finishing ring 20 that is fitted with its intermediate portion over the flange 18 and with its side legs against the inner side of the shell 12 and the outer side of the shell 11. Said finishing ring is adapted to be removably xed to the innen shell by a smooth, solder joint, which permits said ring to be readily removed when occasion requires, by applying a blow torch to the soldered connection and rolling the finishing ring upwardly away from the tank top edge. This construction enables the inner shell to be readily removed for the purpose of repairing it with a minimum disturbance to the structure that supports the shell. The construction described produces at the open top of the inner shell a continuous annular flange 19 which rests on the supporting members 23 of the brackets 22 and said blocks 22 to thereby firmly support the inner shell from the outer shell.

The inner shell is provided centrally at its bottom with a short drain tube 24 which is fastened to said inner shell in any suitable manner, as by being provided with a head 25 which is seated in a recessed part of the bot# tom of the inner shell. Said tube extends through the space 14 and an aligned opening in the bottom of the outer shell. The tube is exteriorly threaded to receive below the bottom of the shell 11 a clamping nut 26, which, when turned upwardly on said threaded tube, draws the inner shell downwardly and forces the flange 19 of the ring 20 firmly on the shoulders or seats, constituted by the brackets 22 and blocks 22', in a manner to centralize and join the inner and outer shells together to constitute a rugged unitary strueture with` the intervening space 14, A secamasar furnish a heated medium, as water and.

steam, to the space 14, and an overflow pipe 31 near the top of the tank furnishes drainage for the water and steam or other heating agent. 32 is a drain pipe for draining waterfrom the space 14.

The contents of the tank is adapted to be stirred by an agitating device comprising, as shown, a vertical rotative shaft 33 provided with one or more pairs of blades 34. The upper end of said shaft is mounted to rotate in a vertical bearing sleeve 35 which is fixed to the broad, horizontal beam 36 which extends across the top of the tank and is supported on the rim thereof. Said bearing extends below and above the bottom to afford an ample length of bearing between the shaft and sleeve. The shaft is provided above said bearing with a belt pulley 37. Said pulley 37 is connected by a belt 38 to a pulley 39 which constitutes part of a suitable driving mechanism enclosed in a gear box 40. As shown, said pulley 39 is fixed to the upper end of a shaft that is geared to a. horizontal shaft 41 mounted in the walls of the gear box 40, and one end of the shaft extends beyond said gear box to receive tight and loose pul leys by which exterior driving power is transmitted to said driving gear. The said gear box 40 is fixed to one end of the. beam 36 by means of an B -Shaped bracket 43 bolted to the beam and to the gear box, as shown in Figure 4.

The said beam 36 is much wider than the diameter of the pulley 37, so that the belt 38 lies well within the side margins of the beam, as best shown in Figure 2. This arrangement prevents dirt whiclrmay collect on the belt or on the pulley 37 from dropping'into the tank, the beam being in position to receive particles dropping from the belt and pulley. An advantage, in the pasteurizingart, of the agitator drive and its support, including the belt and the pulley of the agitator shaft, is that the belt can be removed from the pulley at a time when one orfmore of the top covers 10', fitted to theftop of the tank between said beam and the top edge of the tank, is removed for pouring material into the tank.

The said beam 36 is attached to the rim of the tank by bolts 44 which extend through the ends of the beam, the overlapping members 20, 13, 19, and 23, and into the solid spacing and reinforcing blocks 22. This connection of the beam to the tank structure performs the correlated functions of reinforcing and spacing the shells, due to the blocks 22', bracing the tank structure at its top by the use. of the wide beam extending across the top of the tank and securely attached to the finished edges by numerous bolts (Figure 3), affording a rigid connection of the gear box to the structure, and providing a. guard to prevent foreign particles falling from-the driving mechanism into the tank when open. A further advantage of the structure is its freedom from projectingparts or roughened surfaces likely to collect dirt, and the ease by whichthe apparatus may be cleaned. The structure is a sanitary one and has the further advantage of an attractive product.

It will be noted from an inspection of Figure 3 that the spacing and beam anchoring blocks 22 are arranged in two pairs, with the blocks of a pair at opposite sides of the tank top, and with the several blocks angularly spaced ninety degrees around the circumference of the top. This construction and arrangement of the parts make it convenient to dispose the agitator and the driving gear supporting beam in either of two transverse positions across the tank top and to thereby -readily adapt the apparatus as a whole to different locations of pipe connections from the tank and to an exterior source of driving power. Thus by detaching the beam 36 from the tank it may be adjusted thereon to bring the gear box at any one of four different points on the rim of the tank, and thereby, without the necessity of disturbing fixed pipe connections, adapt the pulleys of the gear box to power belts which approach the apparatus from different directions.

In order to avoid burning the hands of an operator by contact with the side of the shell 11, a relatively thin sheet 45 o f meta'lsurrounds the principal upright part of said shell. Said sheet may become part of an insulator by spacing it from the outer shell ll by upper and lower insulating spacing rings 41T, 48 respectively, or by filling such space with a layer 48 of suitable insulating ma-V terial. When said insulating sheet is employed its upper margin lies between the upper insulating ring and the outer depending memberof the finishing ring 20.

I claim as my invention:

l. Apparatus for the purpose set forth comprising an open top jacketed tank, with,

cover means therefor, said tank being composed of inner and outer shells, with means at the tank top for spacing the shells and forfreinforcing the tank structure thereat and for supporting the inner shell on the outer shell, a beam extending across the top of the tank and'fixed to said spacing, reinforcing and supporting means, and 'provided with a bearing for an agitator shaft, an agitator shaft rotatively mountedin said bearing and a driving gear mechanism for said shaft, embracing a gear supported on said beam outwardly beyond the open top of the tank, and a connection between said gear mechanism and said shaft located over and between the planes of the side edges of the beam.

2. Apparatus for thel purpose set forth comprising an open top jacketed tank, with cover means therefor, said tank being composed of inner and outer shells, with means at the top of the tank for spacing the shells and for reinforcing the tank structure thereat and for supporting the inner shell on the outer shell, a beam extending across the top of the tank and fixed to said spacing, reinforcing, and supporting means and provided with a bearing for an agitator shaft, and a driving mechanism for said shaft, an agitator shaft rotatively mounted in said bearing, embracing a gear box supported on said beam outwardly beyond the open top of the tank, said driving mechanism including a pulley, a lpulley on the agitator shaft above said beam, and a belt trained over and removablel from said pulleys and disposed between the planes of the side edges of said beam. l

3. Apparatus for the purpose set forth comprising an open top jacketed tank, with cover means therefor, said tank being composed of inner and outer shells, said inner its ends to said shell spacing and reinforc' ing means.

4.. Apparatus for the purpose described comprlsing a Jacketed tank, including inner vand outer spaced-shells` the inner shell being provided at its top with a radial, outwardly extending, reinforced Hange, shell spacing elements attached to the outer shell beneath and supporting said inner shell through said reinforced flange, a plurality of said elements being diametrically spaced and solid, an agitator shaft and driving mechanism supporting beam extending across the top of the tank, and screw bolts extending through said beam, through said flange and threaded into said solid supporting and spacing elements.

5. Apparatus for the purpose described comprising a jacketed tank, including inner and outer spaced shells, the inner shell being provided at its top with a radial, outwardly extending, reinforced flange, shell spacing elements attached to the outer shell beneath and supporting said inner shell through said reinforced flange of the inner shell, a channel shaped finishing ring fitted over the rim of the. tank thus formed and fixed thereto, an agitator shaft and driving mechanism supporting beam `extending across the top of the tank, and screw bolts extending through lsaid beam and through said finishing ring and reinforced flanges and threaded into the solid spacing and supporting elements.

6. Apparatus for the purpose set forth comprising a j acketed tank, including inner and outer spaced shells, with shell spacing and supporting means at the top of the tank comprising a radial flange on the inner shell, a ring of angle cross section surrounding and fixed to the inner shell and with one of its members beneath and reinforcing the flange of the inner shell, supporting and spacing elements fixed to and extending inwardly from the outer shell on which the radial flange of said reinforcing ring bears, and means connected between the bottoms 'of the tanks centrally thereof for exerting tension of the inner shell to force the reinforced flange of the inner shell against said supporting members and for -centralizing the inner shell and bracing it with respect to the outer shell.

'7. Apparatus for the purpose set forth comprising a jacketed tank, includingA inner and outer ,spaced shells, with shell spacing and supporting means at the top of the tank comprising a radial flange on the inner shell, a ring of angle cross section surrounding and fixed to the inner shell and with one of its members beneath and reinforcing the flange of the inner shell, supporting and spacing elements fixed to and extending inwardly from the outer .shell on which the radial fiange of said reinforcing ring bears,

Vindependently movable'with respect to the beam, an agitator in the tank embracing an upright shaft mounted in a bearing carried by the beam, a driving mechanism for said shaft, embracing a drive member supported on said beam outwardly beyond the open top of the tank, and a driving connection between the drive member and said shaft arranged above and between the planes of the side edges of saidV beam.

ln witness whereof I claim the foregoing as my invention, I hereunto append my signature this 15 day of March, 1922.

MORRIS GOLDBE-RGER. 

